Lubricating system for milling-machines.



F. A. PARSONS. LUBRlCA-TING SYSTEM FOR MILLING MACHINES.

APPLICATION FILED .IULY 31.1916.

Patented Mar. 11, 1919.

3 SHEETS-SHEET Z.-

F. A. PARSONS. LUBRICATING SYSTEM FOR MILLING MACHINES.

APPLICATION FILED JULY 31.19M-

Patented Mar. 11,1919.

3 SHEETS-SHEET 3 EIS - Inventor,

with a pinion 27 engaging with a rack 28, i

' guided and movable lengthwise 011 a rod cone or series of sliding gears"1618"on I 29fixed in said'case parallel with the driv ingshaft 7; "The'rack 28 is provided with a forked arm 30, which engages with the shaft 7.

'7 -The driving'shaft'7 is extended through $2;'i33 and 35." Theprime mover, :m'otor,

one end of the case 5 and. may 'be'connected with any suitable prime mover, such as an ableimanner.'-" ;In thexpresent case the shaft 31', which'imaybe the shaft of a motor, pulley o'r' 'gearyis'mounted in axial 'alin'ement with the shaft? and is provided with a bevel gear 32 meshing 'with asimilar gear gears aregadapted'to take upioil and delivero it toother vgears ofEthe'train-iWith -Which r they mesh-.1 t Qil is also rthrown from said receptacle by the-gears onis-haft'5li-nto1upper part *Of ;,t he -hollow column 1 and into I the 33-on the' 'up'perend of a vertical shaft 34:.

i iThe gear33 in turn meshes with asimilar gear35, "loosely mounted "on the shaft 7 A clutch 36, feathered on the shaft 7 between thei'gears32and 35,- is adapted to be shifted intoi' engagement "with either one: of said gears an'dithereby connect the shaft? vwith the driving member-31 either; directly or in directly ":and 'reversibly I "through: the gears pill'leyor gear, maybe represented by the a case ".or housing" 'inclosing the same, as

- missiongearing is "disconnected 7 shown in Fig.1.

I Thetclutchfldmaybe shiftedb any suitablemeans such as a' lever not "shown, and

in e' its'f'mid'dle "position but; of engagement o with both gears 32 and 35, the spindle trans- I from the powersorfdriving member 3-1 V il nFigcl a'liever 38fconnected with ,a'rod 39.-'fpa ssi ng axially through the shaft 7, is

'sho'wnylfor operating a; clutch to connect the motondrptherprimemover with the power or'dr-iving' member 31-.

- -work table 40, mounted movable horizontally in directions transverse to each otherxiongaknee' tl, which isvertically adjustable-on the-fcol-umn l fas usualin machines: of this kind, is :connecfted with the prime-moven-37, -as-"shown in-Fig. 1-,- by secondary trains of! gearing extending be low-thmelevated oil receptacle; hereinafter described, and comprising extensible jointed shafts: 42 and gears in'closed in a-case I 43, at- 'tached"-to ithe -column 1f below :the; gear is One off-these secondarytrains, -compris C ingronefof the shaftsi42', 'isjavariableslow j'shaft-13l'aby "the' bevel gears '32 and 33 and the-fyerticalshaft 34. i i i a EThe-i i'o'ther secondary train, comprising speed drive "and is'con'ne'cted with th'eIpower the OthBI'nSlliLflI 42, is a non-variablehigh speed driveand is: connected with the shaft 3L by avpull'ey. (not shown) on said shaft withirrfthehousinge'i and by a-belt gr nd "Pu]ley*'45:. r -Thej gearsv32;33 and are inclosed inian extension of the gear andthe 'clutch 36 thoroughly lubricatedf case 5 forming a housing and lubricant 1 receptacle therefor,j which ,is connected through the upper bearingfofitl'ie shaft '34 and a drain'passage filti with said case; as

shown in Fig. 1. i

For the lubrication of the gears and shaft. bearings of the primary train inclosed '7 in'the 'column'l and case 5, the'column is which is preferably -castintegrally withtthe' side walls of the column,'-and forms below j and -.a djacent tQl'LhBLlOWGY' sides of thec'ompmtively large g speed semen,

'12, 13 and F14: on they-intermediate shaft Z),

an elevated w oil: receptacle from warn :said

gear a case 54 ,1 keeping-,- the gears; bearings and shifting ldevices associated therewith,

An'elbow tube or pipe 5&8;

' side-of t'he column and" provided with a re movable cap I LS; affords meansfor fillin'gfthe oil receptaclei within the,;column.;to a epre determined level, as indicated 'in Figs,- 2

and 3, above the lower -sides ofthe gears or someofthe gears on theshaftifi andibe- 7 low the bearings of [the gea r shafts.-' f-The'molumn fisformed inside 'withopen 7 channels 1 50 and- 51 extending across the 1 side andend walls thereof opposite gearsof v the primary or spindle-1 driving? train 7 and connected with or leading 3 into Wells,- 7 pockets oropenings-52}and:53 .in the zupper Sides off the bearings2 and e iof thespindle 3 a d int ed a e sha t 1 7- The spindl -s bearings have;,d-raimpassagesgf leading I fromkfthe lower s'ides thereofinto the chan-v to one nels;;51, which dischargeginto the wellsor pockets 53, and the bearings l have similar Lpassages 55; in the lowersides thereofyfor; V conducting surplus oil back into the receptacle formed by the partition llbelow; the sha 5y 28 1 rof q s a ni p bathe} gears ion the shaft 5 from. said receptacle and-thrownriby themjagainst the side walls 5 fo-f'the colu1nn,'is caught inthe channels 5'0 and 511 and conducted bythem' to the-bear ings 2 and 4, which are thus kept iautomati- Cally; and thoroughly; lubricated while the machnie'isiin operation.

gears of'the main or' primary train which drive. the tool spindleand are jgof 'comparatlvely large-size. and}; at: comparatively 7 high peripheral speed I are r utilized; lto take up; elevate and di;stributev or supply oil for the? lubricationof all the (gears {andgbearextra-devices for =thi s,purpose.

' .1; .-'.i ilnrthis systemfof lubrication somewf the I he provisiiJn': of thecolumn with a tranverse partition an elevated Arace i V taele fer lhelliling oil in contac'twitmsome table *above the-en of- 'thelowereand tlarger gears wrath-e l train,

aflorfds a -l'elear' umbstrueted :s ace, Iiin the lower rparlt of I'the 'eolumn, which i'isi'itlrus completely shut o lfmnd' separatetliifremjsaidoil receptacle and theagear ilrousirig termed "iby the upper "apart er availahle ttor 1a reservoir flier mutter rc'coling the 'rcelunm am2i is fluid, aI-keonnterweight or eounterweights with which'themaehine may be provided, a tool receptacle, and other usefiulfipurposes.

The connections of the secondary gear trains with the drivingshafftor -member of the prime mover for operating the work I receptacle "-a'rrd' -outsifiw of the column and gear case containing' tlre main or primary gear train for operating the tool spindle, as herein shown and de-. scribed, avoid passlng a transmission connection through the wall of the elevated oil receptacle formed in the column 1 by the partition 47, providing and maintaining an oil tight joint or bearing for such connec tion, and encroaching upon the space in the low r part of the column.

V The construction partition 47 extending from side to side and end to end without openings in connection with the organization of the primary and secondary gear trains and their driving connection as hereinbefore described, some of the larger gears of the spindle driving train having a relatively high peripheral velocity, being arranged to dip into and take up oil from the receptacle -formed bythe partition with the side and end wallsof the column, not only provides simple and efieetive means of lubricating the tool spindle bearings and the several parts of thespindle driving train besides afi'ording room in the lower part of the column for any of the various purposes hereinbefore mentioned; but

also materially stiffens'and strengthens the column where rigidity is most needed against vibration and the various bending or de- I fleeting strains set up by the operation of the machine in cutting metal.

Various modifications in details of construction and arrangement of parts, particularly of the main or primary train of transmission gearing for operating the tool spindle, may be made without departing from the principle and scope of the invention as defined in the following claims.

I claim:

1'. In a milling machine tition forming with the walls of the column an oil receptacle in the upper part thereof, a work table movably mounted on the column, a tool spindle and a spindle driving gear train housed in the column above'said partition, the lower gears of the train adapt- 3. swing.gearrtrain houseni nd 1ngs=-in ithe ce1umn ibearings', some; the gears of the train having a relatively of the column with thev the combination of a hollow column having atransverse parlie driving member 2. unearthing tifiionf -ferm Ting an oil reeeptacle in the upper f part therecf,atwvork table movably mounted v --=*on ar column, :zaaool spindle and spindle having bear,- "abeve sai'e 'artitiensth 'co l umn 'be gwroviued insi'de wit open oil collecting and distributing channels leading larger "and high peripheral speed being arranged to elevate oil from said receptacle and transfer some to other gears and, throw some lnto said channels, a driving member connected 1 with sa1d gear tram, and a secondary gear 4 I train for operatingthe work table connected with-the driving memberabove said receptacle and extendingbelow the same outsider of the column. 3. In a milling machine the combination of a hollowcolumn having atransverse partition' forming an oil receptacle in the upper part'thereof, a tool spindle and a spindle driving gear train housed and having bearings in the column above said partition, the

lower and some of the larger gearsof-the train: being arranged to elevate oil from {said receptacle for of the tram, means for filling'said lubricating other parts receptacle from the outside to a level'above thelower sides of the lower gears and below the lower bearings of the gear train,a driving member connected with said gear train above the oil receptacle, operating the work table also connected with the driving member above the oil receptacle and extending below the same outside of the column.

of 'a. hollow column having a transverse partition forming with the walls of the column I an oil receptacle in the upper part thereof,

4. In a milling machine thecombination and a secondary gear train for;

a vertically ,movable knee mounted on the 7 column, a horizontally movable work table mounted on the knee, a tool spindle and a spindle driving gear train housed and having bearings in the column above saidparsome of thelarger and the lower tition, gears of said train which have a relatively ,high' peripheral speed being adapted to elevate oil from said receptacle for lubricating gear trainextending below said receptacle outside of the column and connected with the knee for operating thetable, and a common driving member connected with said gear trams above the oil receptacle.

other p r s of the gear train, a secondary 1 5. In a milling machine the combination- -0f :a' hollow column hzw lng an opening in.

: one ,side and 'a transverse partition-below the openingforming With thewallsvof the #the oilfreceptacle end connected with 'the -;knee for operating the-.worktable,'-ande V jdriving member-connected with the ftwoegear column an oil receptacle' in the -uppenpart :thereofl a gear case attached terthe 'column over-said opening, a verticallymovable knee mounted on-thevcolumme horlzontally movable Work table mounted on'the knee,ja tool spindle and-f a spindle driving lgear; train j ,housed and having bearings inthe'co'lumn and gear case abovesaid partition, some of the larger and the lower gears of thetrain being arranged to take ;up 'and; splash oil from said receptacle into the upper partof Copies of this patent may be ebtelfned for five cents .e5.eh, ,by

trains HbO YGethB -Oll receptacle.)

the column and-into the-gear 'easej forjlubri -*cating" the spindlebearings and g'earsk andf i-bearings of-the gear trai11 ,=a;secondary-gear trainexte'nding outside of the columnbelow i :Ilrwitness whereof I hereto affixmp signature in presence of'two WltIleSSGS.-

FRED AjPAR Q ewitnesse'sid CHAS. L. G035,

g E. Goss.

I a diires sing the connnissioner. of fatentgs, Washington, D. G.?- I r 

